/*
 *     This file is part of Mobile GPS Logger.
 * 
 *     Mobile GPS Logger is free software: you can redistribute it and/or
 *     modify it under the terms of the GNU General Public License as
 *     published by the Free Software Foundation, either version 3 of the
 *     License, or (at your option) any later version.
 * 
 *     Mobile GPS Logger is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License v3 for more details.
 * 
 *     You should have received a copy of the GNU General Public License v3
 *     along with Mobile GPS Logger. If not, see <http://www.gnu.org/licenses/>.
*/


package cx.ath.skyflyer.chart;

import java.util.Vector;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;

/**
 *
 * @author Ahti Legonkov
 */
public class Legend {

    public Legend(Rectangle chartRect) {
        this.chartRect = chartRect;
    }

    public void draw(Graphics g) {
        int top = chartRect.top;

        Font font = Font.getFont(Font.FACE_PROPORTIONAL, Font.STYLE_PLAIN, Font.SIZE_SMALL);
        g.setFont(font);
        final int lineHeight = font.getHeight() + 2;
        for (int i = 0; i < names.size(); ++i) {
            String name = (String)names.elementAt(i);
            Color color = (Color)colors.elementAt(i);

            g.setColor(Color.BLACK.intValue());
            g.drawString(name, chartRect.right-10, top, Graphics.RIGHT | Graphics.TOP);
            g.setColor(color.intValue());
            g.drawLine(chartRect.right, top+lineHeight/2, chartRect.right-8, top+lineHeight/2);

            top += lineHeight;
        }
    }

    public void clear() {
        names.removeAllElements();
        colors.removeAllElements();
    }

    public void addItem(String name, Color color) {
        names.addElement(name);
        colors.addElement(color);
    }

    private final Rectangle chartRect;
    private final Vector names = new Vector();
    private final Vector colors = new Vector();
}
